x-2(4-x)=42

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Solution for x-2(4-x)=42 equation:


Simplifying
x + -2(4 + -1x) = 42
x + (4 * -2 + -1x * -2) = 42
x + (-8 + 2x) = 42

Reorder the terms:
-8 + x + 2x = 42

Combine like terms: x + 2x = 3x
-8 + 3x = 42

Solving
-8 + 3x = 42

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '8' to each side of the equation.
-8 + 8 + 3x = 42 + 8

Combine like terms: -8 + 8 = 0
0 + 3x = 42 + 8
3x = 42 + 8

Combine like terms: 42 + 8 = 50
3x = 50

Divide each side by '3'.
x = 16.66666667

Simplifying
x = 16.66666667

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